The RF transceiver circuit of IEEE 802.15.4 based on CC2520,operate in ISM band 2.4GHz,the receiving sensitivity is -98dBm and +5 dBm typical output power,adapt to DSSS base band,supports IEEE.802.15.4,ZigBee and proprietary protocols.in this paper,the basic character of CC2520 and application circuit by CC2520,and design of the...